This excerpt briefly describes key aspects of this nonessential amino acid including its effect on the body, efficacy, and adverse effects.

Field tests have become popular in applied exercise science and sport performance enhancement programs because of their simplicity and ability to generalize results. However, numerous confounding factors may influence the validity of test data from such evaluations.

Chris Morris, Director or Performance Science at the University of Kentucky, talks to the NSCA Coaching Program Manager, Eric McMahon, about the importance of capturing athlete readiness through data and technology. Topics under discussion include Dr. Morris’s time as a University of Kentucky football player turned PhD student, how sports science is critical to understanding athlete’s capacities on a much deeper view, and developing interpersonal relationships with athletes to create trust and buy-in. Find Dr. Morris on Twitter: @CMorrisPhD | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

This article discusses the ratings of perceived exertion (RPE) scales and how to educate older clients to utilize them, as well as how to monitor and safely progress their training intensity.

This is an excerpt from NSCA's Essentials of Sport Science by NSCA -National Strength & Conditioning Association, Duncan N. French & Lorena Torres-Ronda.

Dr. Sara Erdner, author of “Dear Coach: What I Wish I Could Have Told You, Letters from Your Athletes,” talks to the NSCA Coaching and Sport Science Program Manager, Eric McMahon, about the coach-athlete relationship. Topics under discussion include coaching education, giving athletes a platform to be heard, and what truly builds mental toughness and resiliency. Find Dr. Erdner on Twitter: @doc_serdner | Find Eric on Instagram: @ericmcmahoncscs or Twitter: @ericmcmahoncscs

Potentially, an instability training program that first involves static balance and then progresses to dynamic balance activities would improve intrinsic balance. This improvement in balance would increase movement confidence, releasing the neuromuscular system from a stiffening strategy to more unimpeded motion, force, and power development.

Learn the basics of conducting a needs analysis for tactical athletes based on the athlete’s goals and desired outcomes, assessments, limitations on workout frequency and duration, equipment availability, health and injury status, and occupational physiological demands.

This article will provide some conditions and standards with specific tools personal trainers may consider using in their initial interview with potential clients.